docs: def get_options(self):
          """ Get program options.
          """
          super(ScriptBaseWithConfig, self).get_options()
  
          self.config_dir = os.path.abspath(os.path.expanduser(self.options.config_dir
              or os.environ.get('PYRO_CONFIG_DIR', None)
              or self.CONFIG_DIR_DEFAULT))
          load_config.ConfigLoader(self.config_dir).load(self.OPTIONAL_CFG_FILES + self.options.config_file)
          if self.options.debug:
              config.debug = True
  
          for key_val in self.options.defines:
              try:
                  key, val = key_val.split('=', 1)
              except ValueError, exc:
                  raise error.UserError("Bad config override %r (%s)" % (key_val, exc))
              else:
                  setattr(config, key, load_config.validate(key, val))